Making seaweed (algae): eg https://www.youtube.com/watch?v=zbIg4TS_TvsNori is red seaweed, Porphyra.No animal suffering - plant "suffering" is acceptable?Minimal or negative carbon footprint.glueing sheets with water (Sewing difficult) No design waste, just eat the discarded parts, (or dilute in water and recuperate the electronics.)

Speculative design:(meaning will be solved in the future)comfort factor. 焼寿司海苔 brittle.construct electronics which can be eaten - at the moment it should be recuperated before eating.(this seems out of the question, but remember humans eat plants and even animals all the time, consisting of neurons, brains, complex cells, hormon systems ... many times more complex than some conglomerate of transistors.)photosynthesis inside the 海苔, seaweed, generating energy (energy harvesting).